Improvement in saw-filing machines



N. PETERS, PHOTU-LITMOGRAPHER. WASHtNGYON, D C.

To all whom it lmay concern:

l lied gmt@ @wat (titille.

Letters Patent No. 105,108, lated July l5, 187i).

IMPROVEMENT IN SAW-FILING MACHINES.

The Schedule referred to in these Letters Patent and making part of the same.

Be it known'that I, .HENRY H. MELLEN, of Boonville, in the county of \Varrick and vState of Indiana;

have invented certain new and useful Improvements in Saw-Filing Machines; and I do hereby declarethat the following is a full and `enact description thereof,

reference being had to tlie'accoinpanying drawing making a part of this application;

'.lhe nature of my invention consists in 'having the file in a vertical. frame sliding horizontally between guides which, in turn, can be adjusted vertically, as will be hereinafter more fully set forth.

And my invention further consists inairanging the saw-clamps upoira pivoted table below. the jrile, and made adjustable longitudinally by means of a rack and pinion device, as will be hereinafter more fully explained.

And my invention further consists in the `peculiar device for preventing the cutting by the ile while being drawn back; andalso in the device for regulating the position of the guides, whereby the depth of cut -is regulated, and the le lifted when the clamp car'rying` the saw is to be moved forward.

And my invention fui-ther' consists in the device for holding the ends of the le, and regulating the length of stroke. y

To enable those skilled in the art to understand my invention, I will proceed to describe the same, referring byletters to the accompanying drawing, which is a perspective view of my improved saw-filing machine.

A represents the' top beam of the frame, supported on cross-pieces, B B, by means of double standards C and D on each side. I

Between these standards G; and D, are placed frames E, which, in turn, hold the horizontal pieces or guides FgF, between which the slide G moves freely.

Attached to the slide, near each end, are forked hangers, H, between which, at a suitable distance be'- low the lower guide, is confined the file I, its two yends being clamped between the two adjustable bearings lia. These bearings are made adjustable by passing through holes or passages in the, hangers, which are provided with thumbscrewswhich are made to impinge against the clamps, and hold -them at any position. 1t will thus be seen that the length of `stroke or' the length of tile to come in contact with the saw may be altered to suit circumstances.

'.lhe under side of the slide G rides upon a small easter or wheel running loosely in an inclined groove out in the lower guide F, (as shown in dotted lines at f,) in such a manner that when the lever J, attached to one end of the slide G, is moved from the left to right, (on the back-stroke of the ile,) the slideGwill rise slightly on the roller or caster f, and thus avoid the back-cnt of .the tile.

The lower guide F extends at one end beyond the standards C, and isprovided at that end withv a bai',

K, the ends of which rest against notches in aspring-r frame, L. By pressing inwardly this spring-frame, the

lower guide is releaseth'and the whole frame may be raised v between the standards, when it is desired to move the saw holding-frame `or clamps, in order to present a new tooth to the file. A A v `Flat springs M, secured to the upper side of the upper guide F', and hearing with their free endsv against the frames E-tend to keep the ksaid` upper guide F' in proper contact with the slide G, while a spring, N, secured .to ,theA under side4 of the lower guide F, at that end where the latter projects beyond the standards, and bearing with its free end against a suitable cross-piece between the standards, has a tendency to. elevate the lower guide, the position of which can be regulated by the bar K and spring-frame L, as above described.

'Pivoted suitably tol the bottom frame of the machine is a table, O, having a longitudinal groove, l), in which freely moves a saw-holding frame.

This frame consists of two pieces, I? P, each having at the under side of its upper face a rack, p, and secured to each other by means .of thumb-screws, as clearly seen in the drawing, so as to confine between them the saw.

On one side of the groove l) is a forked standard, R, forming the bearing for a shaft, on the inner end ot' which is securely keyeda pinion, c, which meshes with the one of the racks p nearest to it, the same shaft carries between thcforks of the standard a ratchet; wheel, S, of suitable size, which is operated by a handle or lever l having a swin infr' awl enefafrinnr 7 C b t* D with the ratchet.

A guide, U, running upon an arm regulates the extent of the motion of the lever T, and, consequently,

the distance the saw frame is moved by the rack and pinion. y I

On the other side of the frame, sti'addliiig the groove l), is a guide, V, for keeping the upper edge of the saw-holding frame in proper position as it slides along. This guide is provided with a set-screw, which, when desired; is used for iirmly holding the saw frame at any desired point.

The operation of my saw-filing machine is-veiy siinple. The guide U, having been set so that the movement of the lever T will, through the ratchet and pinion, move the saw-holding frame precisely the length of 4one tooth of the saw, and the other parts being in position shown in the drawing, thefirst-movemcnt of the lever J will produce a back stroke of the tile,

the slide G, hangers 4H, and file I, all being raised by the caster, as set forth, and by moving the lever back and forth the tooth may be sharpened to any degree.

' One tooth being finished, the spring-frame L is pressed inwardly, and the lower guide F released, and lifted to clearthle from the saw-teeth,the set-screw on the guide V-being loosened, a simple movement of the lever T, upwardly, until it strikes the guide or stop U, will cause the sawclamp or frame to travel forward a distance exactly equal to that between the teeth of the saw. Y i

The guide F is now lowered, allowing the bar K to catch in the'desired4 notches on the spring frame L, when the filing operation is again resumed.

One side of all the teeth having been led, the sawholding frame is taken ont of its groove, and turned end for end, thus presenting the other side of all the teeth to the operation of the file.

The desired bevel is given to the cut o f the file by swivelling the table O upon -its center or pivot.

It will also be seen that a peculiarity of my invention consists in the arrangement and construction of -the guides F F', with their flat springs M N, frames E, slide G, and hangers H, carrying the Iile-bea1ings -and le, whereby these parts, as a whole in themselves,

may be readily secured to and removed from the frame proper, whenever it may he deemed necessary or convenient, their vremoval being accomplished by simplydisengaging the lever J and bar K, and withdrawing the securing-pin Y'.

It is obvious that I may be enabled to sharpen circular as well as straight or other saws, but it may be preferable in large circular saws to dispense with the table O, and its appurtenances, merely placing the saw ramos on a suitable pivot to he provided for" that purpose on the frame, and arranged at the proper angle to the file.

Having described the construction and operation of my improved saw-filing machine,

What "I claim as new and desire to secure by Letters Patent, is

1. The horizontally-sliding frame carrying the file, in combination with the vertically-adjustable guides F F', bar K, springs MiN, and spring frame L, all constructed and arranged substantially as and for the purpose set forth. Y f

2. The saw-clamps P P, with rack p, inv combination -with the swivelling table O, standard B, lever T, stop U, pinion c, guide V, and ratchet-wheel, all con-V structed and operating substantially in the manner and for the purposes set forth.

3. The caster and groove underneath the slide G, for preventing the back cut of the file, constructed and operating substantially as and for the purposes set` forth. y

4. The guides F F', with their -i'lat springs M N, frames E, slide G, and hangers H, carrying the .filebearings and le, arranged within and made removable from the frame proper, substantially in the `manner and for the purposes set forth.4 Y

5. In combination with the above, the adjustable file-bearings a, a, by means of which' the [ile is adjusted longitudinally, or different faces presented to the work,

substantially as and for the purposes specified.

In testimony whereof I have hereunto set my hand and seal this day of April, 1870.,

HENRY H. MELLEN. [L.` s.] Witnesses:

J. G. DARLEY, J B.` HAWLEY. 

